Chose a subject which interests you, like a school subject, sport, or activity. Think about parts of the subject you don't really understand well. Next, pick something from these unknowns that you can test and write a question. For example, does a baseball or football fall faster because of gravity? Or, do frogs chirp louder when the air is humid or dry? Or, does the sound from an acoustic guitar travel longer in air or water?

Convert 9.75 millimeters to centimeters. centimeters

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.